What provides articulation point for the ribs?
What provides articulation point for the ribs?
The rib bones of the human body join, or articulate, with the spine in back and with the sternum by way of the costal cartilage in the front.
How do vertebrae articulate with each other?
Each vertebra has a facet on each side of the vertebral body, which articulates with the head of a rib. There is also a facet on each of the transverse processes which articulates with the tubercle of a rib. The number of thoracic vertebrae varies considerably across the species.
Which structures are made as a result of two articulated vertebrae and creates openings where spinal nerves can enter and exit the spinal column?
When the vertebrae are aligned together in the vertebral column, notches in the margins of the pedicles of adjacent vertebrae together form an intervertebral foramen, the opening through which a spinal nerve exits from the vertebral column (Figure 5).
What are the structures that provide flexibility to the vertebral column?
The lowest vertebrae (sacrum and coccyx) are fused together and don’t move. Facet joints: These spinal joints have cartilage (a slippery connective tissue) that allows vertebrae to slide against each other. Facet joints let you twist and turn, and they provide flexibility and stability.
Where do ribs articulate with the vertebral column?
They articulate with the vertebral column posteriorly, and terminate anteriorly as cartilage (known as costal cartilage). As part of the bony thorax, the ribs protect the internal thoracic organs. They also have a role in breathing – during chest expansion the ribcage moves to permit lung inflation.
How does the spinal cord support the vertebral column?
Together, the vertebrae and intervertebral discs form the vertebral column. It is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord, which passes through openings in the vertebrae.
Where does the serratus anterior muscle attach to Rib 10?
It has a roughened area on its upper surface, where the serratus anterior muscle attaches. Rib 10 only has one facet – for articulation with its numerically corresponding vertebrae. Ribs 11 and 12 have no neck, and only contain one facet, which is for articulation with their corresponding vertebrae.
What are the bonds between the vertebræ and sacrum?
—The intervertebral fibrocartilages are interposed between the adjacent surfaces of the bodies of the vertebræ, from the axis to the sacrum, and form the chief bonds of connection between the vertebræ. They vary in shape, size, and thickness, in different parts of the vertebral column.
